Skiving mechanism



Dec. 1, 1931. c. G. BRosTROM SKIVING MEGHANISM Filed May 2l, 1927 f2 Sheets-Sheet l Dec. 1, 1931. C, G. BROSTROM 1,834,139

SKIVING MEGHANISM Filed May 2l, 1927 2 Sheets-$1661 2 a heel cover inturn-ed upon a face of Va 'heelV Patented Dec. 1,r 1931 lTlENT OFFICE( JERSEY This invention' relates to trimming ima-y cliines for use infthe'manufactureoflshoes and is herein illustrated asembodiedfin a machine for vlieveling covers `which have been laid `upon heels. An embodiment of my invention 'which will behereinafter described is particularly designed )tskiveforto bevel the margins of covering-material applikedfto` the breasts fofLouis heels.` vSuch-heelsy are' made of =Woed` to* which is 4cemented a cover of thinleather, cellulOid', orI arr equivalent, the cover lying- 'smoothly on thesidesof the heel With-its margins'turned! over the forward edges of' the-heel' andYV secured tothe breast or l forward face of theheel. When tlieheel has been secured to a: shoe,;' the' breast 'is covered by a thin sheet of leather'splitf 'fronithe heel end portion of the shoe sole.- This covering sheet should present asmoot'h finished 'sur-'s face on the breast. Henceit is Vnecessaryxto -eyel the 'marginal' portions ofthe heel cover which are'secured to the breast.- Such a-fbev# eling orskiving operation isslow, tedious and; imperfect Whengperformed by hand, and addsmaterially.tothecost of the'is'hoe; Vhi-le the hereinafter describedmachine :is'illiistra't ed as operatingfsupon covers seou'redto Louis heels, it' Willi'befclear that themac-hinemay be used toi-bevel. or' to skive covers laid'fupon other types of heels.` It is an object ofthis inventiontoprovide a machine -for effectively` and expeditiously lievelingcovers of slieet'rmaterial qWhicli have been applied to-rifrid bodies'such, forexample, as heels of shoes.

lWith this objectr in-'View' and in accord'- ance with a feature of the'inventiomthe illustrated machine-comprises `a` cutter 'constructed and arranged tobevel the portions of and mechanism Which isI constructed and-arranged. to guide the heel relativelyto the cutter by engagement with the face for progressively presenting'said' portions of thegcover to the cutter for performingthe beveling: operation. -V

A `The illustrated machine is provided With a fiexible knife blade, and, iny accordance-, With anotherfeature `of the l invention; flexing means `is provided for engaging-'.opposite Silvina macminer@ 1927. serial Nd. 193,336.

sides of the blade to" provide- -a`- curved tri-nrming portion Well adapted toski-ve and bevel the marginal portion of a heel cover. Pref# erably'means is' also provided for' changing thek curvature of said portion to suit there quircments o'fidiferent jobs. In order to guidiea heel andY the'inturned marginal por; tions of its cover relatively tothe cutter' for beveling said portions andin accordance with another feature of the invention-the machine is provided' with' a gage positioned rearward'- lyI of and adjacent to the cutting edgeof th'e knife and 'constructed'- and arranged. to v eri*- ga'ge the' breast of the heel forguiding the heel past the cutter to bevel `thel inturned margins. The illustrated gage has Aa` small heelsengagingl-'surface .andl is so positioned and arrangedfthat the heelmay. bemoved past `theA cutter, While supported against-the gage, in a curved path approximatingzfthe heightwisecurvature of the breast of :a heel and may'also be tilted laterally fortrimming the upper intrned marginal portionsy along the vv,projecting lbreastsof Louis heels. Y

The mechanism for flexing the band knife by engagingfoppositesides of the sameis illustrated as being in rolling contact Withthe knife, and this construction reduces -to Iaminimumitlie friction betweentlie flexing mechanism and the knife and at the same time main'- tainsthe knife'welltensioned; Inorder to centlralize the heel being operated upoii' and' to steady the sameduring the cover-lieveling operationandgv in kaccordance with another feature of tlnsfinven'tioii,` the illustrated'machine isv providedwith arest Which' mafy-be the positioned for engagement with7 a side o heel as the breast'of the heel engages the above-mentioned gager and which; assists in centralizing-'and steadyingthe heel as'the heel ismoifed past the cutter during'thezbevelfing operation.k The rest maybe moved width- WiseV ofthe heel being trimmedE duringrthe trimming operation by mechanismeontrolled by the legiof theV operator, this arrangement leayingthe operator Vfree/to use bothhands in handling the heel. The, herein disclosed method is described and claimedin application for Letters Patr ent of the United. States ASerial N 0.461,439,

x-Y. Y.

' which was filed June 16, 193() in my name tions on the upper part ofthe breast of theV heel in separate operations.V The lower por -4 tion of the breast of Ya Louis heel is commonly concave transversely of the heel, and prefer-l ably the two margins at said portio'nlwilllbe beveled simultaneously, y, k Y

VIn another aspect the invention relates to a .machine for beveling the inturnedA margins Y of heelcovers and thereby displacing hand work.

tact therewith.

The illustrated machine comprises a band knife, a portion of one otherwise straight run of which is maintained flexed to correspond to the concave curvature of the lower port-ionv vofthe breast of the heel. Vith this construction the inturned margi-ns of lthe cover may be beveled, yin accordance with the method, by a cut which progressesalong both margins from the middle ofthe breast to the bottom thereof and by two cuts which progress from the middle of the breast respectively along one margin. ata time to the top of the breast.

Various advantageous features of my invention will be apparent to one skilled in the art 'from the disclosure thereof vin the following description, and on the .drawings of which Figure 1 is a front elevation of a machine embodying myl invention.

vFigure 2 is a plan view of the same.

Figure 3 is a section. on the line k3 3 of Figure1.,. y

Figure4 is a detail of a portion of Figure 1 on alarger scale, part of the'rframework being brokenaway.` .l Y Y Figure .5. is a fragmentary view of a portion of `thesharpening wheel shown in .Figure 3 and a cross section of the knife in con# Figures 6, 7 and 8 are sections on the lines (5.-6, 7-7 and 8-8 respectively, of Figure 4. 1- Figure 9 is a longitudinal section of a heel showing the -action of the knife inY skiving the central and lower edge portions of the heel cover ony the breast of the heel. y

Figure. 1() is a section on the line 10-10 of yFigure 9, certain parts of the mechanism also being shown in elevation in this figure. .Figure 11 is a section of a heel showing the knife operatingonthe upper portion of the heel'breast. Y'

Figure 12 is asection on the line 12-`-12 of Figurell, parts' of the mechanism also being shown. 'f j Figure 13 isa fragmentary perspective of the breast'of the heel,showing the knife op* erating along the margin of the heel seat.'Y

. parallel Figure 14 is a diagrammatic showing of a band kknife locally flexed in a plurality of places for simultaneous use by an equal number of operators.

Referring to the drawings in detail, 20 rep resents a band knife or flexible cutter having one of itsedges sharpened for cutting. As this'knife is to be locally flexed in order to present a bulge or convex portion,the band nis 'preferably' of relatively vthin flexible' steel.' The band knife 20 may be supported asby a lpairof wheels 21, 22 about the peripheries ofV which 'the knife is passed, thus forming y stretches of knife band between the wheels'. Each wheel is Vpreferably formed with a radially extending flange 23, against whichtheunsharpened edge-of the band engages. lThefwheel 21 maybe driven by any suitable means, such as an electric motor 24 which as shown may be connected to suitable reduction gearing indicated at 25 so as to drive the wheel 21 at the speed desired. i1 shaft .26 is shown connecting the motor with the gearing 25'and a shaft 27 is shown extending from the gearing 25 and supporting the wheel 21-which may besecured thereto as by a set screw28. The shaft 27 Vmay be supported as desired in a suitable bearing in a standard 29 which is secured to a bench or table 30. The wheel 22 may be supported by a standard 31the upper portion of which is preferably slotted as at 32 to receive a bearing block 33 in kwhichfis journaled a shaft 34 on which is fixed the wheel 22. The block133 may be moved'to different adjustable positions relatively to the standard 31 by turning a hand nut 135 which is in threaded relation with a screw 35 secured to the block 33. Between the wheels 21, 22 a suitable frame memberi 36 is mounted on the bench l 30. This memberasshown in Figure 4 may befshaped with a centrally arched portion 37 through which is passed a member 38 having a reduced screw-threaded portion 39. The lower end of the member 38 is forked to receivea roller or presser foot 40which is suitablyjournaled therein.` An adjusting nut 41 is fitted into a suitable recess in the arched portion 37 of the frame member, the threaded stem 39 being in threaded engagement with the nut 41. As the nut is held against longitudinal motion by the. recess in which it is located, the rotation of the nut will result in an up or down motion of the member 38 and thus of the roller 40. The members supporting the roller 40 are so arranged that the lower margin 'of the roller may be adjustably moved below the straight path of the lower stretch of the band knife between the wheels 21, 22.: vThe roller40 is also located directly above thevband-knife 20 so that it rests upon the upper Vlf'aceof the knife and locally flexes downwardly the portion of the knife adjacent thereto by an amount depending upon its adjustment through the adjusting nut 41. A

suitable guard and gage member 42,- shownin Figs. `4 and6, may be attached tothe inemberV 38, this memberv extending downwardly as shownk in Figure 6 with a horizontal portion the upper surface 'of which engages the under side of the bandy knife=20 ata point directly opposite tothe pointoffengag'ement of the roller 40 with-the knife and the under surface of which serves as a-gage against which the breast of a heel 53 engages asv will later appear. The end' portion'o'fthe guard 42 is preferably beveled as -at 43, the bevel registering with asimilar bevel'f44 on the knife-2O which. forms thecutting edge thereof. The guard 42 is not essential to thevope eration ofy the mechanism` but its use makes possible sp-eedier work. It also-'serves asa gage to regulate'the depth of thecut and is a' valuable aid in securing uniform trimming action; Gn either side'of'theroller 40 and engaging against the under face ofthe band knife are a pair of vhorizontal guiderollers 45, 46. These rollers are disposed alongside the stra-ight path of the stretch of knife between the wheels 21, 22, andcooperate with the roller 40-to liex the knife locally around a portion of the periphery of kthe-roller 40; The rollers 45, 461 may be mounted for adjusting'movement along the path ofthe knifei To this end, they may be journaledl in frame members one of which is indicated atj47, slidabl'y supported on the bench 80 and adapted to bemoved to adjusted position as bya suitable screw 48. By vertical' adjustment of the roller 40 and by horizontal-adjustment of the rollers 45, 46, the amount of flexure of the knife at the peripheryl of the roller 40 may be regulated within limits. Vertical guide' rollers 49, v50 maybe lprovided. adjacent to the rollers 45, 46v respectively to keep the knife horizontally alined with the roller 40.

Figures 912 present` various sections of a typical Louis heel on `which the machine-as described is adapted to operate.- As 'shown in Figures 1() and 12, the lower part of the heel breast 51 is relatively flat orslightly concave, the upper part being slightly convex. A covering sheet 52 is wrapped about-.and cemented to the sides of the Wooden heel 53, the marginal portions ofthe sheet 52 being securedv tothe. heel breastas at 54 (Figure 13'). In order to bevelthe marginal portions 54 to thin edge without cutting the `wood of the heel, it is necessary, as shown in Figure 10, to useV a curved blade 'which willbe substantially tangent tothe center of the heel breast when operating on the heel. The size and shape of the heel to be operated upon -willV determine the adjustment of theguide rollers 40, 45 and 46 upon which dependsthecurva'-` ture` of the blade 20 atathe point Aofsapplication of the work. The center and-lowerpor# tions of a Louis heelv'breastf are relatively narrowand flat or slightlyconcavelaterally so that the blade l-2O ,f is preferably flexed to bevel 'both edges '541 in: one-operationfalong' these parts yof thev heel as'shown in Figures 9 and 10.. The 4sharp edgel of the'band knife is turnedk away fromv the operator whov dra-ws the heel toward himI as the knife cuts. In beveling the margins 54 on theupper portion oft-he heelbreast, as shown in Figures 11 and `12,wherethe breast is convex laterally, the

edgev on/each sideof theheel5 breast-must be beveledv separately. In order to steady the heel and to guide it Aduring the action of the knifeiya guide member, gage'or rest 55 is provided, which rest is constructed and' ar# rangedfto engage a side of the heel and cooperateswith thel member 42 for' locating-the 'i the'heel' variesin width so that the relation ofthe knife' to the position of the heel as a whole' changes asy different portions of the heel breast are operated on, the guidefme'm'- ber 55 is preferably made'movable: Figure 12 illustrates two positions of the 'guide member whichit will`v` assumewhen the marginal portions' 54 on the'two sides ofthe upper portion of the heel breast are successively'op-l erated on. In order tofacilitate the adjustment of the guide 55 without interrupt-ingthe lWork of the operator, 'a suitable llever 58 is provided with afulcr`uml59jon the Vedge of the bench 30. The lower portion of the lever 58 may be' operated'by'the knee or foot of an operator. The upper portion may beprovlded with a slotl 60 in which rides a pin'l 61 whichfis secured in the guide bar'55. A suit'- lng end 56 in which is 'iXed a rod 57' able-springV 62rmay be* provided as shown in Figures fl* and 4, this springk being secured as .at 63 to the bar 55, and its opposite end 64 tothe frame member 36.` The spring 62 is preferably under'tension so as to pull the bar '55 toward the right asshown in Figures 1 and 4. `Pressure of the operators knee against kthe lever 58 4will push `thebar 55 to;V vvardY thev left against the tension ofy the spring.,v Hence the position of the guide is constantly and easily cont-'rolledand shifted by the operator as the heel is being moved for the -skiving of different portions' so that the flexed portion of the-knife lmay be held progressivelyrelated tothe heel as portions of different widths are brought' into Contact with the bar 55, leaving both of the operators hands free to manipulate the work. f The machine may be operated as follows :1

. The opera-tor takes a heel and holds it under the knife belowfthe roller 40, th'ebottornof the heel 'being away rfrom'fhiin.v The lsideof fas the heel is held against the guide bar 55 and the breast of the heel is held against the member 42 for.l positioning the heel relatively to the flexed portion ofthe knife, the guide being moved by the opcrators knee to center the heel beneath the roller Y40. The breast of the heel is then brought into contact with the knife at or near its center, as shown in Figure 9, and the heel vis drawn toward the operatorduring which movement the knife bevels 1ooth marginal portions 54 of the heel cover to the bottom of the heel, the guide being shifted gradually meanwhile vto maintain the heel centered beneath the roller 40. The heel is then reversed and held .with its top away-from the operator. It is brought against theknife as shown in Figures 11 and l2 torbevel each margin 54 separately, the heel beingdrawn toward the operator during the cutting action of the knife. n y

In addition toV beveling the end edges V54 of the'cover 52 on the heel, the apparatus may be' used to bevelthe marginal portion.y 65 of the cover. which (as shown in Figures 9 and ll) is turned over the seat face of the heel. The action ofthe mechanism inv beveling this marginal portion on the heel seat is similar toits action in beveling the marginal portion 54 on theheel breast. f

A grinder 7l is adapted to be caused to engage the knife 20, when desired, in the manner shown best in Figure 5. f The grinder is fast to the shaft of a small electric motor 73 said motor being mounted in a carrier which is pivoted to the frame of the machine at 7 5. A spring, attached at its ends to the motor carrier and extending down ,around the bottom of a rigid bracket`77, tends at all times to swing'the motor,'and. with it the grinder, away fromfthe-knife. An adjusting screw 79, threaded through the bracket and contacting with the under side'of the 'i motor carrierfurnishes means for moving the grinder into contact desired.

Y In order to avoid unnecessary-duplication of parts in cases wherea plurality of operators are engaged inbeveling the edges of heel covers, I may provide a long band knife as shown` in Figure 14, this knife being long enough to pass over a pair of wheels 2l, 22 which are sufiiciently spaced to allow room with the knife when for a plurality of operators side by'side atY the' working benchA between the wheels.

-Opposite each operator a set of guide wheels 40, 45,46 may be provided,the mounting and o adjustment oftheguide wheels being aspreviously described.

to those skilled-,in -the the that various changes and modifications may be -made therein without departing from itsI Vspirit or scope as Adefined by the appended claims.

Having thus describedY certain embodiments of my invention, it should'be evident I claims.V f

S1. Ina machine of the classdescribed, an elongated flexible cutter havinga cutting edge,vmeans for carrying vthe cutter and for moving it'longitudinally-o'f itself, guiding rollsengagingone sideof the cutter, means engaging the other side of the cutter for maintaining Vsaidl cutter locally fiexed at a point at which work maybe presented theretof-andl means forlfradjustably;.varying the flexure of the cutterat said point.

2. In a machine of the class described, a pair [of wheels, an endless band'knife carried by Vsaid wheels with stretches therebetween,-a..pair'of'guide rollers engaging one side of said'knife along the straight path of one' of the stretches, a deflect-ing roller positioned to engagev the opposite sidev of said knife at a point between said guide rollers, and meansfor adjusting the 'defiecting roller Vtransvensely of the knife.

3. -In a machine of the cl-ass described, a band knife, knife guiding means engaging one side of the knife,y means engaging the otherv side vof the. knife for maintaining a portion of said knife locally fiexed at points where work may be presented thereto, other` Ineens for driving the knife longitudinally of itself, and a movable guide rest for thework adjacent to said point of flexure of the knife.

4. In la machine of the class described, a band knife. means for driving said knife longitudinally of itself, a 'pair of spaced guide rollers positioned to engage said knife on the same side thereof, a flexing roller between said guide rollers and engaging the opposite side of said knife, means for adjustably moving said guide rollers along the path of the knife, and meansfor adjustably moving said iiexing roller transversely to the path of the knife.

5. Ina machine ofthe class described, a

band knife, means for driving said knife longitudinally of itself, means engaging opposite sidesof the knife formaintaining said knife locally flexed at a plurality ofl separated points to form an undulatory knife surface at which points separate pieces of work may bepresented simultaneously, and'mcans for adjustably varying the Iiexure at each of said points. i 1 Y 75A-machineofjthe class described having,-in combination, a band knife, means for operating the knife, and means for supporting av portion of the knife at a selected locality Vof one run of the knife Vfor-presentation f a piece -f Work thereto, there being a free and unobstructed-space on three sides of the knife a't-th-is locality whereby the operator may stand at the rearofthe knife,tpresent the Work-to the-edgeof the knife and draw the Work ltoward him ivi'th either the'top or the bottom lof the Work toward him as `mayvr be desired. g 8. A ma chinev of the class described having, in combination, a band knife, means for operating the knife, and Vmeans for vsupporting a portion ofthe knife in 1flexedcondition "at a selected locality of an othervvisestraightrun I of V4the knife for presenta-tion ofa pieceof Work thereto, there beingv a free 'and unobstructed space .on threesides of the knife at: this locality whereby the-operator'may stand: at the rea-r of the knife, lpresent the Work'to the edge rof the .knife and *draw/*the Work toward him with eitherthe top orthe bottom ofzthe Work toward himfas may be desired.

' 9;-A machine for beveling the inturned margin of a heel cover uponfthe breast of a heel having in lcombination acut'ter to which the heel'is` presented andA past l Whichjit is moved, a 'guide adapted vto engage the 'side of the heel to facilitate the "presentation ofthe inturned margin .to the edge offthe cutter,

and means for operatingthe cutter. 3G"

10. A machine for beveling thefinturned margin-'of a heel cover uponthe brea'stof'a' heel khaving` in combination, acu'tt'er to which the heel is presented and pastn'which itpis 3.5, moved, .a guide :adapted to 'engage the-side of `the heel to faeilitatethe;'presentation' 'of the int-urned margin to .the edge vofthe cut-` ter, means for operatingv the cutter, and means for changing the positionof 'the guide .dur-` ing the operation of; the cutter.

11. A machine' for bevelingY theinturn'ed margin ofa heel coverupon the breast of a heelv having in combination a knife, a guide for facilitating the presentation` ofthe in-- turned margin to the knife, andlmeans for operatingthe knife. i p

` 12. A. machine 'for bevelingv` the inturned margin of a heel cover upon the breast of a heel havingy in combinationv aj knife, a vguide for 'facilitating the `presentation of 'the' in-v turned vmargin tothe knife, and. means for causing the' knife to produce adraw. cut. v

. 13. A machine for beveling the marginal portion of a covering applied to ahe'el'having, in combination, a flexible cutter mounted for movement longitudinally of itself, means to flex the cutter atap'ortion arranged so that the heel maybe presentedj to the cutterV forL beveling the marginal portion Vof the heel `covering', means to guidethe heel past the cutter, and means' to varyl theiiexure of the cutter at its flexed portion.` v Y 14. AV machine for' bevel-ing the marginal portion of a covering applied to a heel having, n in combination, a'band'knife, means for car'r ingthe bandfknife andlfor lmoving longi# tudinally of itself, a pair of guide rlls en- Y gaglngvone side v*of the band knife, a presser engaging the opposite side of the band 'knife and'fconstructed and arranged for cooperation 4:With-guide rol-ls to flex a 'portion `of theA4 cutter for facilitating the presenting of the heel .to the'band knife to bevel the marginal portion yof the' heel coveri-ng, and means tov of the knife `at its flexed por f Y 75 "351A machine for beveling the marginalV knifefor beveling the marginal portion Aof thet heel covering, means for varyingfthe amount of theflexure at the flexed portion Vof thev knife, and means for guiding ithe heel'p'ast 'the 'beveling flexed portionof gthe knife as the' operation progresses.

y16. A machine for beveling the marginal' por-tion of al heel covering` upon thebreajstl of a heel having, in combination, 'a Vband knife, rolls Yf'orguiding the band knife,av presser roll arranged to flex a portion of the knife'infsuch a manner that the heel maybe presented tothe iexed portion of the'knifey forbeveling the marginal portion of the heelr covering upon the breast of the heel', meansv forfvaryingthe flexure at the flexed portion,

a member serving as a guard for the' knife guide rol-ls arranged to engage" loo and also varranged :to support the heel breasts i during the beveling of the marginal portion" and means to engage a side ,i ofthefheelas the heel is moved past the flexed 'i Vportion o-f the knife to carry out the beveling of said' covering,

operation. c c n `117. 'A -machine vfor lbeveling the marginal portion of-aheel covering applied to a heel having, in combination, a flexible cutter havingfav Cutting edge mountedfor movement longitudinally of itself, means vfor engaging oneside of the cutter, a Vpresser for engaging the other side of the cutter at a point so as to form a rflexed portion of the cutter' arranged to bevel the marginalportion of the heell covering as the heel is movedpast the cutter;` means associated With'thepresser arranged to engagea surface of the `heel to facilitate the guiding of the heel past the flexible portion of the cutter,-and other means f'orengaging another'surface of the heel 'to assist in correctly positioning the same relatively to the cutter as the progresses.

18.. A' machine yfor beveling the inturned marginal portion of va heel covering upon the breast of a heel having, iny combination, ai

tudin'a'lly efitself, means for engaging onellao lexiblecuttermounted for movement longitrimming operation side ofthe cutter, a presser for engaging the othenside of the cutter at a point so asito. forma flexedA portion of the cutter arranged.

to bevel thetmarginal portion of theheelcovering yas the heel is moved past thexcutter,

meansassociated with vthe presser arranged to engage the breast of the heel for guiding the heel past the flexible cutter,and an adj ustable gage to engage a sid-e of they heel for facilitating the correct positioning of the heel relatively to the cutter'as the trimming operation progresses. Y Y

519. A machine for beveling the marginal portion of a heel covering applied to a heelv having, in combination, a band knife, means for guiding the knife, a presser memberarranged to engage a side of the knife to flex a portion of the knife, said portion being con-' structed and arranged to bevel the marginal portion of the' heel' covering as the heel is moved past the knife, and a combined knife guard and gage associated with the presser member and located at the side ofthe cutter` opposite the side of thegcutter vWhich the pressermember engages, said Acombined knife guard andgage Abeing constructed and arranged to engage tliebreast ofthe heel as the.. fbeveling operation progresses. Y

A 20. A trimming vmachinehaving,,in com-I' .binatiom means comprising avcutterfhaving a curved, cutting edge constructed` and arf 'ranged to reduce theV thickness of the manV y ginal portions of an inturnedheel cover laid.

upon the breast'of a heel, and means for;guid' ingrthe heel relatively to thercutter asV the',

lheel is moved past the cutter for reducing the thickness `of the marginal portions o f the cover.

. 21. A trimming machine having, combination, a cutter having a .curved cutting edge movable lengthwise of itself and con-v structed and arranged to reduce the thickness of the inturned marginal'portions of a `heel side cover laidfupon a concave breast of a'heel, and 'means for guiding the heel relatively to the'cutter as the heel is moved' pastthe cutter foi` reducing the thickness ofsaid inturned marginal portions of the 22. A trimming machine having, in com` bination, a cutter constructed and arranged to bevel the Vmarginal portions of a heel cover inturned upona face of a heel, means con-Y structedY and arranged lto guide the heel rela-- tively to thecutter by engagement with said face thereby progressively to present' said portions of the cover .to fthe cutter to bevel the same, .and means for operatingthe cutter. I

y 23. A machinefor operating uponl an in# iturned marginal portion of a heel cover applied to the breast o f a heel having, in combination, a knife floribeveling'said marginal portion of the heelcover, means for positioning the heel. relatively to theknife as the heel and the `knife are moved relatively to each riesame means for operating. the knife.y

24. A machine for operating upon an inturned marginal portion of a heel cover laid upon a faceof a heel having, in combination, a cutter mounted Vvfor movement lengthwise other-to bevel said `marginal portion, and

of its cutting edge for beveling said marginalportion of the heel cover, means for positioning the heel relatively to the cutter as the heel and the cutter ,arel moved relatively to each other tobevel said marginal portion,

- and means for operating the cutter.

25. A trimming machine having, in combination, aflexible cutter constructed and arranged to bevel the marginal portions of a heel side cover laid upon the breast of a heel, means for varying the flexure of said cutter, and a gage'constructedy and arranged to guide'fthe heel relatively tothe cutter by contacting With the breast of the heel in order progressively to present the'marginal portions of the, coverY laid upon the breast ofthe heel .to the cutter for beveling said portions.

' 26.` :Altriniming machine having, jin com# bination', a. flexible knife mountedl for move-j ment lengthwise of itself and constructed and arranged to bevel the inturned marginal portions of aheel side cover laid upon the breast' of aheel, a gage constructed and arranged to engage the breast ofthe heel'y between said inturnedmargins for guiding the heel relativelyptozthe cutter to present saidinturned marginal portions to the cutter, and means for operating the cutter..V

27.*A trimming vmachine having, in combination, a flexible cutter constructed and ar-v ranged to bevel the -iinturned' marginal por-y tions of aheelV cover laidupon the breast of a heel, means for flexing a portion of the cutter, andmeans for engaging .the breast and a side of the heel for positioning the same relatively to a flexed portion of the cutter to bevel the in turned margins ofthe cover as the heel is moved past the cutter.

28.r A trimming machinehaving, in combination, a cutterl comprising a curved cutting edgeY movable lengthwise of itself, means for fiexing a portion of the cutter, and means said shoe part as the' shoe part is moved past the cutter, and means for-operating the cutter. 30. `A trimming machine 'ha-ving, in com- I bination, a curved cutter constructed and arranged tobevel the marginal portions of a ssp.

heel cover inturned upon a concave face of a heel and terminating Within said concave face of the heel, and a gage constructed and ar-` ranged to guide the heel relatively to the cutter by engagement with said concave face for progressively presenting said portions of the cover to the cutter. 3l. A trimming machine having, in combination, a flexible cutter constructed and arranged to bevel the marginal inturned portions of a heel side cover laid upon the breast of a heel, means for varying the flexure of said cutter, and a gage constructed and arranged to engage a limited portion of the breast of the heel for guiding the heel relatively to the cutter and to prmit the heel to be freely tilted laterally of itself as the marginal portion-s are progressively presented to the cutter.

32. A machine for operating on the inturned marginal portions 'of a heel side cover laid upon the breast of a heel having, in conibination, a flexible knife, means for flexing a portion of the knife, means for engaging a side and the breast of the heel for positioning the same relatively tothe flexed portion Y of the knife to bevel said marginal portions as the heel andthe knife are moved relatively to each other, and means for operating the knife.

33. A machine for operating on the inturned marginal portions of a heel cover laid upon the breast of a heel having, in combinaf tion, a band knife, means for flexing a portion of the knife, a gage for engaging the breast ofthe heel, a gage for engaging a side of the heel, said gages being constructed and arranged to position the heel relatively to the liexed portion of the knife-and to guide the heel past said portion to bevel the inturned marginal portions upon the breast of the heel as the heel is moved past the knife, and means for operating the knife.

34. [i machine for operating on the inturned marginal portions of a heel coverlaid upon the breast of a heel having, in combination, a band knife, means for flexing aportion of the knife and for varying the curvature of said portion, a gage for engaging the breast of the heel, a gage for engaging a side of the heel, said gages being constructed and arranged to position the heel relatively to the flexed portion of the knife and to guide the heel past said portion to bevel t-he inturned marginal portions upon the breast of the heel as the heel is moved past the knife, and means for operating the knife.

35. A machine for operating on the inturned marginal portions of a heell cover laid upon the breastof a heel having, in combination, a band knife, means forl flexing a )ortion of the knife, a gage for engaging the breast of the heel to determine the position of the heel toward and away from the knife, a gage for engaging a side of the` heel to centraliiettheheel relatively to' theflle'Xed por! tion ofthe mi'feand mounted formovementf2 toward andaway fromth'enfir'stnamed-`- gage;l said gages beingl constructed and arranged l to' gliidetheheel as "itism'oved past theileXed portionof the' vkiiife for beveling the inturned f marginal portions 'of the cover 'laid upoxr-'thef breast ofthe"heel,and 'mea-ns* for "operz'iti`lr ing the".ki-iife.`r

36? A" trimming machine having, inx com-bi'-4 nation,AV cutter t movable: lengthwise i ofi its: cutting] edge for beveling "the inturned' mar# gina-l portions of`a heel side fcover laid "upon the' breastof a L'ouis heel, means constructed and'y arrangedto guide theheel relatively "to the cu-ttei` Vy bfy" engagement with said breast asftheA` heel l'is moved past "the cutter for beveli 'g said" marginal' iportio'n's," and n'ieansjv for* operating the'l cutter; n

375 f Altrimming "machine f having, "iii combi"-v nation, aA cutter movable lengthwise bfitself" andl `cbns`trt`ieted and arrangedto 'bevel 'the marginal Yporti'ons "of a heelz coverf laid uponlf a "cup d 'facet ofafheel, an'da-v gage con# st'iuctdf'fand' arranged to guide-the' heePp'ast the fcutter',`*permitting` the heel to' be' movedvl inf a :curved pathf Whilein Vengagenieifitv Witlr ui'efffaeef'of'meneer thereby Iprogressively to4 pres'lnt'said:portions of the covertoftlieculli terfor 'b'eivelingl said 'portionsff Y 38'?'1Mtrimmingmachin having,- in coni'- binaticn? a curved cutter nfrovlablelengtlfiiwisei` off itself? and f missfucusdL fand 1 arranged@ tel bevel the inturned marginal vpoitioiisoff"ai'rm s ofthf'e': cutter1 and constructed? and arranged? progressively toeng'age the 'breast kof the heell and toperniit the-heeltoybe tiltedheightyvise and vvidthivise of itself 'as it''isfmo-vedl pat u the cutter thereby Vlieveling said marginal t poi'tionsofthe cover. n Y

391." Al .trimming'machiife having',l in com-` bin'atif af'cutt'er having` acurvedcntting edge"-nrovalbleV lengthwise" of 'itself' and constructed and Zarranged to 'bevel the marginal'` portionslo'f a' heelfcover inturned upon `-a-` face* of`B aheel, means for flexingA 'a f' portion 'lof f` the cutter, and a gage independent of said means*A constructed zand arranged to guide the: heel relatively to the cutter by engagementfwith?v saidyface'to#presentsaid lportions of the cover to the'cutter for beveling said marginal p0rtions. f y

40; A trimming machine having, in combination, a flexible cutter movable lengthwise of its cutting edge and constructed and arranged to bevel the marginal portions of a heel cover inturned upon the breast of a heel, means for varying the fleXure of said cutter, and a gage having a shoulder positioned adjacent to the cutting edgel of the cutter and adjacent to the plane of movement of the cutter, said shoulder being constructed and arranged to guide the heel relatively to the mi'i iis"

ist

cutter and Ato permit the heel to be Amoved past the cutter in a path corresponding to theheightwise curvature of the breast( of the heel..

QQ; 41. 'A trimming machine having, in combination, a band'knifeconstructed and ar-l ranged .to bevel the marginal portions of a heel cover inturned upon the breast of a heel, l means for flexing a portion of the cutter to 19. which the heel to' be operated vupon is presented and algage having a shoulder provid-V ed Vvvith a small gaging surface positioned adjacent to the cutting edge ofthe knife and also positioned adjacent to the plane vof the usknife, said shoulder being constructed and arrangedto permit the heel to be moved past the cutter vin a path corresponding to the heightwise curvature of the heel and also to permit the heel to be laterally tilted as it is 2Q moved past the cutter for vloeveling said marginalportions of thecover. n y n I A42. A trimming machine/having, in combinatiom' a flexible knife movable lengthwise of itself, a presser-foot constructed and-ar- 2frrangzd toengage one side of the knife for flexing a portion of the lrni-fe,' and a gage positioned atrthe opposite4 side of the knife and substantially opposite to the presser-foot and constructed andarranged for engageaoi-Lment with the' breast of a heel the lmarginal portions of the Vside cover.` of' Which have been inturned upon the breast of theheel for guiding the heel past the cutter to bevel saidmarg'inal portions. v Y 1 43. .Atrimmmg machine "having, in combination, a Aloand knife,y a presser-foot con# structed and varranged toy ,engage vone side ofv the knife for fiexing a portion of the same, a gage located at the opposite side ofk the 49 .'knife and *adjacentV to the cutting redge of the knife as Well as substantially'opposite to the presser-foot, said gage being constructed and arrangedfor engagementwith a heel the marginal portions of the'side cover of 45 -which have been inturned upon thebreast of the heel for guiding the lheel in aV curved path past the cutter to bevel said marginal portions of the cover upon the breast ofthe heel. 5o In testimony whereof I have affixed my signature. A s n CHARLES G. BROSTROM.V

Patent No. 1, 834,139..

CERTIFICATE OF CORRECTION.

December l, 1931.

CHARLES G. BROSTROM.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction ns follows: Page 2, line 4, beginning with the words "ln one aspect" strike out all to and including the word "breach" in line 30; and that the said Letters Patent should be read with this correction therein that the same mayconform to the record of the case in the Patent Office.

Signed and sealed this 12th day of'July, A. D. 1932.

M. J. Moore,

(Seal) Acting Commissioner of Patents. 

